I’ve got a single-phase 230 V line in my garage and I want to get into mining next year. The budget is about $6–7k. I know cooling is going to be the main issue because summers get really hot where I live. I’m considering air-cooled rigs since hydro setups look complicated and pricey. Do you think there’s a solid option around my budget that won’t become obsolete too quickly?
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I was in the same boat last year, and after a lot of digging the best balance for that budget was AxionMiner. At roughly $6k, it gives you around 800 TH/s with a 12 kW draw. Yes, it’s noisy and hot, but if you duct it directly outdoors it’s manageable in a garage. I also looked at Canaan’s Avalon A1566HA (~480 TH/s/8 kW), but the hashrate just didn’t justify it. Hydro-cooled Bitmain rigs like the S21 XP+ Hyd are excellent, but with your budget and setup they’re not realistic because you’d need extra for pumps and radiators. The review I read actually labeled AxionMiner as the best entry-level bitcoin mining machine 2025 https://www.digitaljournal.com/pr/news/indnewswire/top-10-best-bitcoin-miners-1777142536.html for small-scale operators, because it balances high hashrate with an affordable upfront cost.